diff options
author | Michael Mann <mmann78@netscape.net> | 2016-12-16 09:35:01 -0500 |
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committer | Michael Mann <mmann78@netscape.net> | 2016-12-16 17:28:50 +0000 |
commit | 1a57d810423a70563c7d1fae5c956317c242d55c (patch) | |
tree | 401e669b9ae43f2eb808ec7c791e04bed8147bfe /epan/packet_range.c | |
parent | 70c4a0347ca02f5b8f7ed82d33e340e86d0bd533 (diff) |
Rename packet-range.[ch] to packet_range.[ch]
The check*.pl scripts presume that files with the prefix "packet-"
are dissector files and therefore have different rules than other
files. Rather than trying to clarify that more with additional
directory information, just make any non-dissector file with
"packet-" filename prefix conform if it fails a "dissector specific"
check from the scripts.
Change-Id: I7cb52e1fad4ea62320492bb690904260f958aeb4
Reviewed-on: https://code.wireshark.org/review/19304
Petri-Dish: Michael Mann <mmann78@netscape.net>
Reviewed-by: Dario Lombardo <lomato@gmail.com>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Michael Mann <mmann78@netscape.net>
Diffstat (limited to 'epan/packet_range.c')
-rw-r--r-- | epan/packet_range.c | 379 |
1 files changed, 379 insertions, 0 deletions
diff --git a/epan/packet_range.c b/epan/packet_range.c new file mode 100644 index 0000000000..c688967af3 --- /dev/null +++ b/epan/packet_range.c @@ -0,0 +1,379 @@ +/* packet_range.c + * Packet range routines (save, print, ...) + * + * Dick Gooris <gooris@lucent.com> + * Ulf Lamping <ulf.lamping@web.de> + * + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * Copyright 1998 Gerald Combs + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "config.h" + +#include <string.h> + +#include <glib.h> + +#include <epan/frame_data.h> + +#include "packet_range.h" + +/* (re-)calculate the packet counts (except the user specified range) */ +static void packet_range_calc(packet_range_t *range) { + guint32 framenum; + guint32 mark_low; + guint32 mark_high; + guint32 displayed_mark_low; + guint32 displayed_mark_high; + frame_data *packet; + + + range->selected_packet = 0; + + mark_low = 0; + mark_high = 0; + range->mark_range_cnt = 0; + range->ignored_cnt = 0; + range->ignored_marked_cnt = 0; + range->ignored_mark_range_cnt = 0; + range->ignored_user_range_cnt = 0; + + displayed_mark_low = 0; + displayed_mark_high = 0; + + range->displayed_cnt = 0; + range->displayed_marked_cnt = 0; + range->displayed_mark_range_cnt = 0; + range->displayed_plus_dependents_cnt = 0; + range->displayed_ignored_cnt = 0; + range->displayed_ignored_marked_cnt = 0; + range->displayed_ignored_mark_range_cnt = 0; + range->displayed_ignored_user_range_cnt = 0; + + g_assert(range->cf != NULL); + + /* XXX - this doesn't work unless you have a full set of frame_data + * structures for all packets in the capture, which is not, + * for example, the case when TShark is doing a one-pass + * read of a file or a live capture. + * + * It's also horribly slow on large captures, causing it to + * take a long time for the Save As dialog to pop up, for + * example. We should really keep these statistics in + * the capture_file structure, updating them whenever we + * filter the display, etc.. + */ + if (range->cf->frames != NULL) { + /* The next for-loop is used to obtain the amount of packets + * to be processed and is used to present the information in + * the Save/Print As widget. + * We have different types of ranges: All the packets, the number + * of packets of a marked range, a single packet, and a user specified + * packet range. The last one is not calculated here since this + * data must be entered in the widget by the user. + */ + + for(framenum = 1; framenum <= range->cf->count; framenum++) { + packet = frame_data_sequence_find(range->cf->frames, framenum); + + if (range->cf->current_frame == packet) { + range->selected_packet = framenum; + } + if (packet->flags.passed_dfilter) { + range->displayed_cnt++; + } + if (packet->flags.passed_dfilter || + packet->flags.dependent_of_displayed) { + range->displayed_plus_dependents_cnt++; + } + if (packet->flags.marked) { + if (packet->flags.ignored) { + range->ignored_marked_cnt++; + } + if (packet->flags.passed_dfilter) { + range->displayed_marked_cnt++; + if (packet->flags.ignored) { + range->displayed_ignored_marked_cnt++; + } + if (displayed_mark_low == 0) { + displayed_mark_low = framenum; + } + if (framenum > displayed_mark_high) { + displayed_mark_high = framenum; + } + } + + if (mark_low == 0) { + mark_low = framenum; + } + if (framenum > mark_high) { + mark_high = framenum; + } + } + if (packet->flags.ignored) { + range->ignored_cnt++; + if (packet->flags.passed_dfilter) { + range->displayed_ignored_cnt++; + } + } + } + + for(framenum = 1; framenum <= range->cf->count; framenum++) { + packet = frame_data_sequence_find(range->cf->frames, framenum); + + if (framenum >= mark_low && + framenum <= mark_high) + { + range->mark_range_cnt++; + if (packet->flags.ignored) { + range->ignored_mark_range_cnt++; + } + } + + if (framenum >= displayed_mark_low && + framenum <= displayed_mark_high) + { + if (packet->flags.passed_dfilter) { + range->displayed_mark_range_cnt++; + if (packet->flags.ignored) { + range->displayed_ignored_mark_range_cnt++; + } + } + } + } + +#if 0 + /* in case we marked just one packet, we add 1. */ + if (range->cf->marked_count != 0) { + range->mark_range = mark_high - mark_low + 1; + } + + /* in case we marked just one packet, we add 1. */ + if (range->displayed_marked_cnt != 0) { + range->displayed_mark_range = displayed_mark_high - displayed_mark_low + 1; + } +#endif + } +} + + +/* (re-)calculate the user specified packet range counts */ +static void packet_range_calc_user(packet_range_t *range) { + guint32 framenum; + frame_data *packet; + + range->user_range_cnt = 0; + range->ignored_user_range_cnt = 0; + range->displayed_user_range_cnt = 0; + range->displayed_ignored_user_range_cnt = 0; + + g_assert(range->cf != NULL); + + /* XXX - this doesn't work unless you have a full set of frame_data + * structures for all packets in the capture, which is not, + * for example, the case when TShark is doing a one-pass + * read of a file or a live capture. + * + * It's also horribly slow on large captures, causing it to + * take a long time for the Save As dialog to pop up, for + * example. This obviously can't be kept in the capture_file + * structure and recalculated whenever we filter the display + * or mark frames as ignored, as the results of this depend + * on what the user specifies. In some cases, limiting the + * frame_data structures at which we look to the ones specified + * by the user might help, but if most of the frames are in + * the range, that won't help. In that case, if we could + * examine the *complement* of the range, and *subtract* them + * from the statistics for the capture as a whole, that might + * help, but if the user specified about *half* the packets in + * the range, that won't help, either. + */ + if (range->cf->frames != NULL) { + for(framenum = 1; framenum <= range->cf->count; framenum++) { + packet = frame_data_sequence_find(range->cf->frames, framenum); + + if (value_is_in_range(range->user_range, framenum)) { + range->user_range_cnt++; + if (packet->flags.ignored) { + range->ignored_user_range_cnt++; + } + if (packet->flags.passed_dfilter) { + range->displayed_user_range_cnt++; + if (packet->flags.ignored) { + range->displayed_ignored_user_range_cnt++; + } + } + } + } + } +} + + +/* init the range struct */ +void packet_range_init(packet_range_t *range, capture_file *cf) { + + memset(range, 0, sizeof(packet_range_t)); + range->process = range_process_all; + range->user_range = range_empty(); + range->cf = cf; + + /* calculate all packet range counters */ + packet_range_calc(range); + packet_range_calc_user(range); +} + +/* check whether the packet range is OK */ +convert_ret_t packet_range_check(packet_range_t *range) { + if (range->process == range_process_user_range && range->user_range == NULL) { + /* Not valid - return the error. */ + return range->user_range_status; + } + return CVT_NO_ERROR; +} + +/* init the processing run */ +void packet_range_process_init(packet_range_t *range) { + /* Check that, if an explicit range was selected, it's valid. */ + /* "enumeration" values */ + range->marked_range_active = FALSE; + range->selected_done = FALSE; + + if (range->process_filtered == FALSE) { + range->marked_range_left = range->mark_range_cnt; + } else { + range->marked_range_left = range->displayed_mark_range_cnt; + } +} + +/* do we have to process all packets? */ +gboolean packet_range_process_all(packet_range_t *range) { + return range->process == range_process_all && !range->process_filtered && !range->remove_ignored; +} + +/* do we have to process this packet? */ +range_process_e packet_range_process_packet(packet_range_t *range, frame_data *fdata) { + + if (range->remove_ignored && fdata->flags.ignored) { + return range_process_next; + } + + g_assert(range->cf != NULL); + + switch(range->process) { + case(range_process_all): + break; + case(range_process_selected): + if (range->selected_done) { + return range_processing_finished; + } + if (fdata->num != range->cf->current_frame->num) { + return range_process_next; + } + range->selected_done = TRUE; + break; + case(range_process_marked): + if (fdata->flags.marked == FALSE) { + return range_process_next; + } + break; + case(range_process_marked_range): + if (range->marked_range_left == 0) { + return range_processing_finished; + } + if (fdata->flags.marked == TRUE) { + range->marked_range_active = TRUE; + } + if (range->marked_range_active == FALSE ) { + return range_process_next; + } + if (!range->process_filtered || + (range->process_filtered && fdata->flags.passed_dfilter == TRUE)) + { + range->marked_range_left--; + } + break; + case(range_process_user_range): + if (value_is_in_range(range->user_range, fdata->num) == FALSE) { + return range_process_next; + } + break; + default: + g_assert_not_reached(); + } + + /* This packet has to pass the display filter but didn't? + * Try next, but only if we're not including dependent packets and this + * packet happens to be a dependency on something that is displayed. + */ + if ((range->process_filtered && fdata->flags.passed_dfilter == FALSE) && + !(range->include_dependents && fdata->flags.dependent_of_displayed)) { + return range_process_next; + } + + /* We fell through the conditions above, so we accept this packet */ + return range_process_this; +} + + +/******************** Range Entry Parser *********************************/ + +/* Converts a range string to a user range. + * The parameter 'es' points to the string to be converted, and is defined in + * the Save/Print-As widget. + */ + +void packet_range_convert_str(packet_range_t *range, const gchar *es) +{ + range_t *new_range; + convert_ret_t ret; + + if (range->user_range != NULL) + g_free(range->user_range); + + g_assert(range->cf != NULL); + + ret = range_convert_str(&new_range, es, range->cf->count); + if (ret != CVT_NO_ERROR) { + /* range isn't valid */ + range->user_range = NULL; + range->user_range_status = ret; + range->user_range_cnt = 0; + range->ignored_user_range_cnt = 0; + range->displayed_user_range_cnt = 0; + range->displayed_ignored_user_range_cnt = 0; + return; + } + range->user_range = new_range; + + /* calculate new user specified packet range counts */ + packet_range_calc_user(range); +} /* packet_range_convert_str */ + + +/* + * Editor modelines - http://www.wireshark.org/tools/modelines.html + * + * Local variables: + * c-basic-offset: 4 + * tab-width: 8 + * indent-tabs-mode: nil + * End: + * + * vi: set shiftwidth=4 tabstop=8 expandtab: + * :indentSize=4:tabSize=8:noTabs=true: + */ |